I am only a little bit familiar with some efforts in the Soviet Union to feed data into computers and crunch out predictions. But nothing successful that I know of. Do you have any materials that describe a successful solving of a problem in GDR using the approach you mentioned?

In general I am extremely skeptical about efforts to predict what will happen with the economy as a whole. Instead, a much more viable approach seems to be to identify a concrete problem and work on it. Like Uber predicting at what times and in which places in a city there will be demand, and positioning their drivers in those places in advance. I consider that a real solution to a real problem. Comparing it with the philosophizing of economists... it's like night and day.